Armed police patrolled outside an EDEKA-supermarket in the Hamburg district of Barmbek-Nord, Friday, after one person was killed and at least four more injured in a knife attack at the site. The assailant, whose identity has not yet been revealed, was reportedly detained following the attack. The police reported that the suspect was «definitely» a one-time offender. According to the police... Еще, the suspect attacked the supermarket's customers with a kitchen knife and then fled the scene. Witnesses reportedly followed the suspect and alerted the police. The suspect was arrested in the street near the supermarket. The motives behind the attack are yet to be identified.